Abaixo está uma instrução que descreve uma tarefa de geração de SQL, combinada com uma entrada que fornece mais contexto sobre os esquemas de tabela disponíveis. Escreva o código SQL que responda adequadamente à solicitação
 ###Instrução: Quem foi o vencedor em 28 de dezembro de 2007?
 ###Tabelas: CREATE TABLE belting_and_debelting_statistics (belting_and_debelting_statistics_id AUTO_INCREMENT PRIMARY KEY, Feb 2010 VARCHAR, Mar 2010 VARCHAR, May 2010 INT, Jun 2010 INT, Jul 2010 INT, Aug 2010 INT, Sep 2010 INT, Oct 2010 INT, Nov 2010 INT, Dec 2010 INT, Jan 2011 INT, Feb 2011 INT, Mar 2011 INT, Apr 2011 INT, May 2011 INT, Jun 2011 INT, Jul 2011 INT, Aug 2011 INT, Sep 2011 INT, Oct 2011 INT, Nov 2011 INT, Dec 2011 INT, Jan 2012 INT, Feb 2012 INT, Mar 2012 INT, Apr 2012 INT, May 2012 INT, Jun 2012 INT, Jul 2012 INT, Aug 2012 INT, Sep 2012 INT, Oct 2012 INT, Nov 2012 INT, Dec 2012 INT, Jan 2013 INT, Feb 2013 INT, Mar 2013 INT, Apr 2013 INT, May 2013 INT, Jun 2013 INT, Jul 2013 INT, Aug 2013 INT, Sep 2013 INT, Oct 2013 INT) CREATE TABLE individual_events (individual_events_id AUTO_INCREMENT PRIMARY KEY, Round VARCHAR, Venue VARCHAR, Discipline VARCHAR, Date VARCHAR, Winner VARCHAR, Second VARCHAR, Third VARCHAR) CREATE TABLE end-of-season_managerial_changes (end-of-season_managerial_changes_id AUTO_INCREMENT PRIMARY KEY, Name VARCHAR, Club VARCHAR, Date of departure VARCHAR, Replacement VARCHAR, Date of appointment VARCHAR) CREATE TABLE irn-bru_second_division (irn-bru_second_division_id AUTO_INCREMENT PRIMARY KEY, Date VARCHAR, Opponent VARCHAR, Venue VARCHAR, Result VARCHAR, Attendance INT) CREATE TABLE list_of_performances_on (list_of_performances_on_id AUTO_INCREMENT PRIMARY KEY, Week VARCHAR, Theme VARCHAR, Song Sung VARCHAR, Artist VARCHAR, Status VARCHAR)  
SELECT Winner FROM individual_events WHERE Date = 28 december 2007